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Application of Surfactants in Metal Processing

Sep. 11, 2020

In the metal processing industry, surfactants are widely used in metal cleaning, pickling, phosphating treatment and metal turning, milling, planing, grinding, drilling, pressing, drawing, polishing, casting, as well as electroplating and anti-corrosion processes , Whether it is Anionic Surfactant, cationic surfactants or non-ionic surfactants used in various processes can not only improve and simplify the process. reduce labor intensity, but also improve product quality, increase product added value, save raw materials and Reduce product costs. Countries are actively developing new surfactants suitable for metal processing and researching surfactant compounding technology to meet the needs of all aspects of the metal processing industry.

Various cleaning agents with surfactants as the main component are used in the metal cleaning process. The cleaning effect is good. It can not only remove oil on the metal surface, but also clean hand sweat, inorganic salt and other dirt, and it is safe and non-toxic to use. It can also prevent corrosion, save energy, reduce environmental pollution, and is suitable for mechanized automatic cleaning.

In the metal pickling process, using a pickling solution with added Surfactant can improve the effect of pickling and rust removal, and it also has a certain corrosion inhibition effect on metals. Pickling will produce a lot of acid mist, which not only affects human health and pollutes the environment, but also severely corrodes plants and equipment. Using surfactants to suppress mist is convenient and simple, and the effect is good. The fog suppressants used in the process are all compounded with various surfactants.

Anionic Surfactant

Anionic Surfactant

In the metal phosphating (bluing) treatment process, in the neutralization process after pickling the steel plate, a certain surfactant must be added as an emulsifier in the neutralization solution to accelerate the neutralization reaction and ensure complete neutralization. Phosphating agents used in phosphating treatment are also added with surfactants, their main functions are cleaning, corrosion inhibition and surface conditioning. Commonly used surfactants include polyoxyethylene type nonionic surfactants and petroleum sulfonate anions A combination of surfactants.

The cutting fluid used in the metal cutting process is also added with surfactants, which mainly play the role of emulsification, wetting, lubrication and cleaning, as well as corrosion resistance. Commonly used surfactants are polyoxyethylene type nonionic surfactants, fatty amine cationic surfactants, and sulfonate and phosphate anionic surfactants.

In the quenching process of metal materials and products, the quenching liquid mixed with mineral oil and surfactant is used for quenching, which can make the quenching uniform and the quenched parts are easy to clean.

Surfactants have been widely used in metal welding processes. For example, treatment with a surfactant-containing treatment solution before metal welding can prevent welding slag and spatter adhesion, improve the welding effect, and make the welding joints stronger.

A large amount of surfactants are also used in the casting process, which can improve the quality of castings and molds, increase productivity and reduce production costs.

The use of surfactants in the electroplating process of metal parts can obtain dense crystallites, making the coating bright, smooth, uniform, without pinholes, and no pitting. The coating and the base metal have strong bonding force, which can significantly improve the quality of castings , But also save power.

If necessary, please contact the Surfactant Supplier

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